Question

Determine which pair of points has a negative slope.

(–8, 1), (8, –8)
(–9, –2), (3, 6)
(2, –8), (–1, –9)
(6, 9), (5, 7)

Answer 1

Find the slope of each pair of points....use the slope formula...

\(\Huge{slope=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}}\)

Answer 2

So we will set them up like this...

\(\LARGE{A=\frac{-8 - 1}{8- (-1)}}\)

\(\LARGE{B=\frac{6-(-2)}{3-(-9)}}\)

\(\LARGE{C=\frac{-9 - (-8)}{-1 - 2}}\)

\(\LARGE{D=\frac{7-9}{5-6}}\)

Answer 3

I am really bad at this and am really confused on what the answer should be. And would like to thank everyone for the help i just still confused.

Answer 4

Follow the given formula @563blackghost gave you. They gave all that is needed to solve the problem. If the answer is negative, then that is your negative slope.
A calculator may be ideal for this.

Answer 5

so i got c is this correct

Answer 6

Not quite.

\(\huge {C=\frac{-9 - (-8)}{-1 - 2}} \rightarrow \frac{-1}{-3}=\frac{1}{3}\)

Since they are both negative they will cancel out to be a positive so C would not be the answer.

Answer 7

would that make it B because that has a positive and negative number

Answer 8

\(\huge{B=\frac{6-(-2)}{3-(-9)} \rightarrow \frac{8}{12}}\)

Not quite.

Answer 9

Would it be A

Answer 10

Bingo! ^^

Answer 11

Thank you so much for your help

Answer 12

Your very welcome ^^

Answer 13

If you've not any more questions about how this is solved, please close the question. ^3^